A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long and short anchor cable coordinated energy absorption and yielding device and construction method
The invention provided with a long and short anchor cable coordinated energy absorption and yielding device and a construction method. The device is characterized in that a long anchor cable adopts mixed yielding material with dual characteristics of energy absorption and yielding deformation and plastic porous partition plates so that deformation energy released during roadway surrounding rock deformation damage or rock burst generation can be absorbed and yielding is generated; and the front end of a short anchor cable adopts a sliding type hollow anchor head and a moving type locking deviceso as to achieve anchoring and yielding, and the rear end of the short anchor cable adopts a quantitative yielding end anchoring device composed of an end anchoring device, a spring pressing head anda multi-stage yielding spring so as to achieve multi-stage yielding and coordinated deformation with the long anchor cable, so that the situation that the long and short anchor cables are broken by bearing excessive load or absorbing excessive energy is avoided, the use safety of the long and short anchor cables is ensured, and the basic stability of a roadway is maintained. The device has the characteristics that the energy can be absorbed at the right time, graded quantitative yielding is achieved, the long and short anchor cables cooperatively work, the transverse shear resistance is achieved, and the economical and applicable effects are achieved, and can meet the requirements of supporting weak fractured surrounding rock roadways, deep high-stress roadways and rock burst roadways.
本发明提供的长短锚索协调吸能让压装置及施工方法，长锚索采用具有吸收能量、让压变形双重特性的混合让压材料和塑料多孔隔板，可吸收巷道围岩变形破坏或发生冲击地压时释放的变形能并产生让压；短锚索前端采用滑动式中空锚头、移动式锁止器以实现锚固和让压，后端采用端头锚固装置、弹簧压头、多级让压弹簧组成的定量让压端头锚固装置实现多级让压及与长锚索的协调变形，防止长短锚索因承受过大的荷载或吸收过多的能量而发生破断，保证长短锚索的使用安全和维持巷道的基本稳定。本发明装置具有适时吸能、分级定量让压、长短锚索协调工作、横向抗剪、经济适用的特点，能满足软弱破裂围岩巷道、深部高应力巷道及冲击地压巷道支护的要求。
Long and short anchor cable coordinated energy absorption and yielding device and construction method
The invention provided with a long and short anchor cable coordinated energy absorption and yielding device and a construction method. The device is characterized in that a long anchor cable adopts mixed yielding material with dual characteristics of energy absorption and yielding deformation and plastic porous partition plates so that deformation energy released during roadway surrounding rock deformation damage or rock burst generation can be absorbed and yielding is generated; and the front end of a short anchor cable adopts a sliding type hollow anchor head and a moving type locking deviceso as to achieve anchoring and yielding, and the rear end of the short anchor cable adopts a quantitative yielding end anchoring device composed of an end anchoring device, a spring pressing head anda multi-stage yielding spring so as to achieve multi-stage yielding and coordinated deformation with the long anchor cable, so that the situation that the long and short anchor cables are broken by bearing excessive load or absorbing excessive energy is avoided, the use safety of the long and short anchor cables is ensured, and the basic stability of a roadway is maintained. The device has the characteristics that the energy can be absorbed at the right time, graded quantitative yielding is achieved, the long and short anchor cables cooperatively work, the transverse shear resistance is achieved, and the economical and applicable effects are achieved, and can meet the requirements of supporting weak fractured surrounding rock roadways, deep high-stress roadways and rock burst roadways.
本发明提供的长短锚索协调吸能让压装置及施工方法，长锚索采用具有吸收能量、让压变形双重特性的混合让压材料和塑料多孔隔板，可吸收巷道围岩变形破坏或发生冲击地压时释放的变形能并产生让压；短锚索前端采用滑动式中空锚头、移动式锁止器以实现锚固和让压，后端采用端头锚固装置、弹簧压头、多级让压弹簧组成的定量让压端头锚固装置实现多级让压及与长锚索的协调变形，防止长短锚索因承受过大的荷载或吸收过多的能量而发生破断，保证长短锚索的使用安全和维持巷道的基本稳定。本发明装置具有适时吸能、分级定量让压、长短锚索协调工作、横向抗剪、经济适用的特点，能满足软弱破裂围岩巷道、深部高应力巷道及冲击地压巷道支护的要求。
Long and short anchor cable coordinated energy absorption and yielding device and construction method
一种长短锚索协调吸能让压装置及施工方法
MENG QINGBIN (author) / WANG JIE (author) / WANG QI (author) / WANG HONGTAO (author) / ZHOU YUEJIN (author) / LI WEITENG (author) / SUN WEN (author)
2020-07-17
Patent
Electronic Resource
Chinese
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